US 11,899,125 B2 · Automatic interference detection and avoidance in radar transceiver systems

Abstract

A radio frequency (RF) circuit includes an input terminal configured to receive a reception signal from an antenna; an output terminal configured to output a digital output signal; a receive path including a mixer and an analog-to-digital converter (ADC), wherein the receive path is coupled to and between the input and output terminals, wherein the receive path includes an analog portion and a digital portion, and wherein the ADC generates a digital signal based on an analog signal received from the analog portion; a test signal generator configured to generate an analog test signal injected into the analog portion of the receive path; and a digital processor configured to receive a digital test signal from the digital portion, the digital test signal being derived from the analog test signal, analyze a frequency spectrum of the digital test signal, and determine a quality of the digital test signal.

Claims24

Dependent claims

A radar system, comprising:

a radar semiconductor chip comprising:
a ramp signal generator configured to generate a frequency-modulated ramp signal within a predefined radar frequency range, the frequency-modulated ramp signal comprising a plurality of frequency ramps each starting at a respective ramp start frequency and ending at a respective ramp stop frequency, wherein the respective ramp start frequencies and the respective ramp stop frequencies of the plurality of frequency ramps define a first frequency range;
a transceiver configured to receive at least one radio frequency (RF) signal from an antenna, the transceiver comprising an interference detection circuit configured to detect an external interference signal included in the at least one RF signal, the external interference signal being within the predefined radar frequency range;
and
a controller configured to autonomously adjust at least one ramp parameter based on the detected external interference signal and autonomously transmit the at least one adjusted ramp parameter to a microcontroller.

2 more elements

Dependencies are inferred from the claim text.

Automatic interference detection and avoidance in radar transceiver systems

Life of this patent

Automatic interference detection and avoidance in radar transceiver systems

Life of this patent

Abstract

Claims24